Test Information:
Protein S (S-Protein) is a vitamin K-dependent plasma glycoprotein that is found in two forms in plasma. A Protein S deficiency may be acquired or inherited and is associated with an increased risk for recurrent venous thrombosis.
Specimen Container:
Blue Top Tube (Sodium Citrate)
Specimen Type:
Plasma
Required Volume:
2 mL
Patient Preparation:
No Patient Preparation
Notes:
To obtain optimal results, it is recommended to separate plasma from whole blood within 15 minutes from the time of collection; aliquoted specimen must be transported within 4 hours from the time of collection.
- However, if delay in transportation occurs, it is vital to follow the stipulated storage and stability. Specimen received beyond the stipulated storage and stability is considered “sub-optimal” in nature.
- For FROZEN specimen, send specimen on running day prior to cut-off period; ONE TIME THAWING ONLY!
Storage & Stability
(Before Processing)
- Storage: 15 to 25°C
Stability: 4 hours - Storage: – 20°C
Stability: 1 month
Transport Temperature:
Freshly collected specimen: Room (18˚C – 24˚C)
Frozen specimen: Frozen (-20 °C)
Test Category:
Batch
Test Schedule:
Specimen receiving CUT-OFF:
Wednesday, 1100H
All specimen received beyond cut-off will be included for the next batch processing.
Results Availability:
Thursday at 1200H